Technology has both simplified and complicated how parents gather health information, how they use it to make decisions for their families, and how these decisions impact society as a whole. And perhaps no single issue illustrates that dichotomy better than the alleged vaccine-autism link, which doctors describe as a myth still perpetuated on the Internet and in some media despite the lack of corroborating evidence. Seth Mnookin, author of The Panic Virus, draws on interviews with parents, public-health advocates, scientists, and anti-vaccine activists to tackle a fundamental question: How do we decide what the truth is? In a discussion moderated by WithinReach executive director Alison Carl White as part of National Infant Immunization Week, Mnookin and “Seattle Mama Doc” blogger Wendy Sue Swanson, a practicing pediatrician at the Everett Clinic, a staff member at Seattle Children’s Hospital, and a recently selected CDC Childhood Immunization Champion who advocates the importance of immunization, address how parents can use that insight to find accurate information and make the right decisions for their families. Presented by WithinReach, Town Hall, and University Book Store as part of The Seattle Science Lectures, sponsored by Microsoft. Series media sponsorship provided by KPLU; media sponsorship provided by Seattle’s Child.